package com.kaifamiao.demo.d0727;

public class Demo03 {

    private static int score;

    public static void main(String[] args) {
        Student stu = new Student();
        stu.score = 10;

        change(stu);

        System.out.println(stu.score);// 10
    }
    
    public static void change(Student s){
//        s.score => 10
        Demo03.score = 60;
    }
}
